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Finding the Fourth Proportional to 173,130.84, 259,729.92 and 66,507

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Solution

The fourth proportional to 173,130.84, 259,729.92 and 66,507 is: 99,773.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,130.84 : 259,729.92 = 66,507 : x
  2. Step 2: Convert to fraction form
    173,130.84/259,729.92 = 66,507/x
  3. Step 3: Cross multiply
    173,130.84x = 259,729.92 × 66,507
  4. Step 4: Simplify right side
    173,130.84x = 17,273,857,789.44
  5. Step 5: Solve for x
    x = 17,273,857,789.44/173,130.84
  6. Step 6: Final answer
    x = 99,773.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.